Features

Wiring

Universal to oxygen sensor's harness (wire-cut required)

Working Theory

A popular modification amongst vehicle owners is to decat the exhaust system or install an aftermarket header, to unlock the power of the vehicle. Nowadays, exhaust gas is controlled through two to up to four o2 sensors, at least one upstream sensor that controls the fuel management system, and at least one aftercat that monitors catalytic converter function. When the aftermarket headers are installed or converters are removed on your Vauxhall Nova, the result is a catalyst efficiency trouble code alerting the Electronic Control Unit that the catalyst is missing or not working properly. The modified engine now produces a larger amount of exhaust gases than allowed. Obviously you do not want to drive your car with a constant SES light, in addition your Vauxhall Nova will not pass emission inspection in many US states or countries with an illuminated SES light. The ultimate solution is to install an O2 sensor simulator wired up to the post exhaust gas oxygen sensor’s harness in order to emulate a properly functioning exhaust oxygen sensor. EZ CEL Fix oxygen sensor eliminator delivers the ECM with mimicked, fluctuating voltage signal and tricks the Electronic Control Unit into thinking the emission is within allowance. Your Vauxhall Nova oxygen sensor simulator will allow you to drive your vehicle without converter and still keep the check engine light off.

This unit eliminates 1 up to 4-wire narrowband oxygen sensors only.

When check the engine light is tripped, the engine runs in ECU Safe mode, which results in sluggish acceleration and spoiled fuel mileage. EZ CEL Fix O2 Sensor Simulator eliminates either precat or downstream sensor, thus you can remedy the miffing engine management codes. Magnum EZ CEL Fix Oxygen sensor simulator is available to all cars, trucks and SUV's fitted with 1 up to 4-wire narrowband zirconia exhaust air fuel sensors working in the standard 0 up to 1.0 Volt fluctuating voltage range. Feel free to contact our engineers prior to purchase, if you are unsure about your Vauxhall Nova's o2 sensor type. EZ CEL Fix Oxygen sensor simulator remedies all catalyst efficiency and oxygen sensor related CEL codes caused by modifications made to your Vauxhall Nova’s exhaust. Dual exhaust with two downstream oxygen sensors requires two EZ CEL Fix eliminators. This Vauxhall Nova O2 Sensor Simulator is adjustable, making you enable to adjust the Air Fuel Ratio within certain range yet complies with the requirement of ECU.

Notes

In case of a single oxygen sensor or dual pipe exhaust system fitted with two o2 sensors only, the oxygen sensor simulator plugs to these ports.

Headers require both up- and downstream Oxygen sensor simulation.

precatair fuel sensor has to work flawlessly. Slow signal of precat lambda sensor may prevent the aftercat oxygen sensor emulator from working.

Oxygen sensor simulator is a racing part. It is not CARB approved. Please be aware of the bylaws and regulations, O2 sensor eliminator is not street legal in several US states and countries.

Vauxhall Nova EZ CEL Fix Oxygen Sensor Simulator is a must-have device if you are about remove the cat converter or even if you installed aftermarket header, a performance catback system or free flow catalytic converter. Are you chasing after the ultimate solution for CEL issue? Then you’ve come to the right place.

Are you reluctant to believe that your Vauxhall Nova will get rid of the service engine soon light you’ve been struggling with ever since your exhaust was upgraded? EZ CEL Fix oxygen sensor simulator will surely dismiss your reluctance. Backed by our 22-year experience in Engine computer tuning, we bring the ultimate solutions to your engine compartment.

Packing List

1 x EZ CEL Fix Oxygen Sensor Simulator

4 x Bullet Connectors

4 x Heat Shrink Tubing

1 x Installation Instructions

How can I figure out my sensor is a zirconia type?

Zirconia type oxygen sensors have 1 to 4 wires. 1 to 3 wires indicate a zirconia narrowband O2 sensor definitely. In the case of 4 wires, two of the wires have to be identical for heater, whilst the rest two wires have to be different for signal sender and signal ground. Always reference the sensor-side colors of the wires coming out off of sensor head. ECU-side colors may convert through the plugs.

How to find out if it's a narrowband or wideband?

Typically 1 to 4-wire sensors are narrowband. There are exceptions though. A narrowband oxygen sensor's signal is constantly fluctuating in a range of 0 to 1.0 Volts depending on oxygen content in the exhaust gas. Any oxygen sensor that produces higher voltages, is determined to be a wideband oxygen sensor. Keep in mind, although a 4-wire O2 sensor can be wideband too, in common sense only 5 or 6-wire sensors are called wideband. If your sensor has more than 4-wires, oxygen sensor is not applicable.

Which sensor has to be tricked?

In general: the downstream but upstream has to work flawless in full range. If you intend to buy a simulator hence decatting, header or modified exhaust, the downstream sensor has to be fooled by all means. See position diagram .

Headers or precat gutting requires upstream simulator as well.

Questions and answers

- Can I be positive this chip fixes my CEL issue for good and all? - Yes, Magnum oxygen sensor simulator produces a random fluctuation having assigned with suitable cycle and wave accepted by the ECU. Rest assured, all oxygen sensor signal related codes will be gone. Upstream sensor if any has to be in good condition though. Please see prerequisites pertaining to sensor type and quantity of simulators. - What if I simply eliminate factory oxygen sensor? - Oxygen sensor removal will not remedy CEL issue. Suitable fluctuating signal is fundamental to be delivered by the ECU. Zero volt signal triggers another trouble code. - Why is it so important to cancel the trouble code? - While check engine light is on, ECU restricts the engine performance and vehicle is running in safe / limp mode. MPG is also affected negatively. - Do I need to buy a heated simulator or I can stick with this cheaper EZ CEL Fix? - If you can use the heater of the factory oxygen sensor(s), you may wire up this #795 EZ CEL Fix. Heated simulator #661 allows you to remove or eliminate the stock oxygen sensor completely. - What about 'oxygen sensor bungs' 'mini cats' or any other piggybacks are also supposed to sort our FI problems? - The market is teeming with physical gadgets aiming to fix CEL issues. Vast majority of them doesn't take effect on OBDII vehicles made after 1996. They often don't work even on early fuel injected cars. If your vehicle had been manufactured after 1996 or you drive an early model controlled by a sensitive ECU, these gadgets won't help. The definite solution is a circuit conditions realistic signal, as if a working oxygen sensor would be screwed in the factory exhaust. - Can I rally my two harnesses into one simulator? - No, simulators can't be spliced. Get rid of oxygen sensor related CEL issue yet today. Flat catalytic converter gutting or plain-tube decats will spoil low- and mid-end torque hence ruined engine flush due to inadequate exhaust back pressure and higher block temperature thus valves, cylinder head and other engine parts are constantly being exposed to undesired extra heat. True enough, maximum horsepower increases it still pertains to a higher RPM which perishes dynamic kick out acceleration throughout the RPM range, mostly on automatic vehicles, therefore to save money on fuel and enhance low and mid-end torque, highly recommended to install a reliable Decat . Plain decatting is judged unprofessional among serious tuners and enthusiasts. Injected gasoline engines controlled by Electronic Control Unit (ECU) or alias Electronic Control Management (ECM) have oxygen sensor or O2 sensors to measure the amount of oxygen contained in the exhaust gas. These sensors deliver the ECU fluctuating voltage according to the actual oxygen consistence of air fuel mixture. When exhaust system is decatted or heavily modified, ECU is reading an oxygen sensor signal being inconsistent with other engine sensor's signal, or signal is out of the range yet accepted, an O2 sensor-related trouble code will be triggered ending up in check engine light issue. CEL or MIL or FI errors abbreviate these failures. While check engine light is on, ECU runs in so called lean limp mode. Safe mode restricts both the fuel trim and the ignition timing and develops an overall limitation on performance, until problem diagnosed and resolved definitely. Therefore if you modified your engine with any upgrade causes the oxygen sensor deliver lower signal than normally, you need to wire up an Oxygen Sensor Simulator. Although your ECU will be tweaked, mixture's air fuel ratio still will remain incorrect hence decatting or any other exhaust modification. Simulators help you remedy CEL problems but will not achieve that basic remapping is crucial when decatting or modifying an exhaust. You might be interested in our further performance chips in order to boost engine horsepower, improve fuel efficiency or both at the same time. EVO-Tech and Dyno-Boost and Smart-Tune-X fuel controllers remaps the ECU in order to reprogram the engine management to the performance parts preinstalled on the vehicle. They boost the engine horsepower as well as improve fuel mileage. Magnum Tuning has been dealing with manufacture of performance upgrades since 1994. Our experience warrants peak performance, reliability perfect style. Simulators are made in Europe covered by 10-year warranty.

Claims stated in this description are warranted by Magnum Tuning.

Oxygen Sensor Simulators are not CARB Approved, and are never to be used on Pollution Controlled Vehicles or on Public Highways in those states and countries simulators are prohibited. Customer agrees and takes responsibility NOT to install the Oxygen Sensor Simulator in order to pass federal or other emission test or to treat check engine light also referred to as CEL/MIL issues.

very easy to install and operate

after MIL gone could definitely feel more power, the air to fuel ratio is better, very easy to install and operate. The technical support was one of the best I have ever had! I had to buy 4. No qualms I will recommend this company to everyone.

works as described

My initial fears of spoofing engine computer have been increasingly decreasing with the help of Magnum Tech Team. They are prompt and able to address my concerns fast. I am thankful to Kev tech support department for his superb assistance. Everything works as described.

PO420/PO430 code never came back

After I installed these in 500 SLC and reset the catalyst effficiency codes --- check engine light w/PO420/PO430 code never came back on and I passed emissions. Immaculate support when you need and the product is exactly as described.

de-catted truck is craving for o2 bypass

When i spotted on eZ CELL to my R 3500 and consulted part info, I got the grasp of what I needed to purchase. No qualms when your de-catted truck is craving for o2 bypass these are must. The only minus they don 't make dual sims.

will walk you through everything

I stumbled across this web site after searching high and low for a piggyback for my CEL to be cured. I am a broke amateur I still coped with the set up by myself. Tech support was a wealth of help. I recommend this o2 bypass to people who are having similar screwy sensor codes issues even after replacing all the stinking sensors! Easy to install the simulator will walk you through everything, codes are tripped no more and trust me I felt the firmer shifts better take off hence normal ECM mode.

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